Patent GB-190811642-A (GB)
Title: Improvements in or relating to Taximeters.
Inventor: HAMMARLUND HENNING
Filed: 1908-05-28
Granted: 1909-03-18
Abstract: 11,642. Hammarlund, H. May 28. Fares, registering.-Relates particularly to taxameters in which on a breakdown of the vehicle the clockwork can be stopped to avoid increases of the charge until the journey is subsequently resumed. The flag shaft A' is geared to the tariff shaft A<2> by toothed-wheels a, a. The gear-wheel a is provided with a projection a<3>, which, when the flag shaft is in the free position, supports a lever B<1>. A disk a<1x> on the tariff shaft A<2> carries projections a<4>, a<5>, operating, respectively, pivoted levers B<2>, B<3>. The lever B<3> is provided with a depending rod b<3>, which carries at its lower end a pin supporting a pivoted arm C. The pivoted arm C is provided with spring-controlled plungers c, c', which. are mounted upon a spring bar and engage heartshaped cams c<3>, c<4> employed for zeroizing the shillings and pence indicators. From a pivoted lever B', Fig. 11, depends a rod b<2>, which, when the flag shaft is in the position shown, supports a pivoted arm D carrying a pivoted arm d<x>, which engages a ratchet-wheel d<1x> on the shaft carrying the zeroizing-cam. To allow for the difference in charges between the first and subsequent portions of a journey, two star-wheels F, F<1>, Fig. 3, are mounted on a shaft f, the wheel F<1> having limited movement relatively to the wheel F which is fixed on the shaft f. A projection f x on the boss of one wheel engages a slot in the boss of the other wheel, the two wheels being kept normally in their relative positions by a spring. The shaft f also carries a gear-wheel f<1> and a disk f<2> provided with projections f<3>. The gear-wheel f<1> I is actuated by a wheel f<4>, Fig. 1, which is mounted at the lower end of the pivoted lever B', and is driven by a wheel f Fig. 11, from the vehicle wheels on the clock. In operation, when the flag is moved to the left to the "engaged" position, the arm B' falls, allowing the arm D to fall until a projection d' thereon engages the upper edge of a pivoted lever E. At the same time, the projection a<5> on the wheel a<1> is displaced, allowing the arms B<3>, C to fall. The cams c<3>, c<4> are thus freed. In the "engaged" position, the projection a' moves the lever B<2> to bring the gear-wheel f into engagement with the gear-wheel f<1>. No movement of the indicating-mechanism, however, occurs until the distance corresponding to the initial charge has been traversed. When this has occurred, the starwheel F<1> moves with the fixed star-wheel F, and, striking a pin e' on the lever E, moves the lever E out of engagement with the projection d' on the arm D. The arm D then rides on the star-wheel and operates the pence indicator. When a breakdown occurs, the flag staff is moved round further causing a projection g<2> on a disk A<3> mounted on the shaft A' to engage the upper arm of a lever G, which stops the clock by means of a brake g<4>, Fig. 11, applied to the balance wheel g5. On returning the flag shaft to the engaged position, the clock is again started. On returning to the "free" position, the wheel f<1> is disengaged from the wheel f<4>, and the indicating mechanism is zeroized by the plungers c, c<2>. At the same time the star-wheel F is returned to its correct position by means of a projection c<5> and a pivoted pawl c<6> both mounted on the arm C.